Systematic KMTNet Planetary Anomaly Search. X. Complete Sample of 2017 Prime-field Planets
Author:
Ryu Yoon-HyunORCID, Udalski AndrzejORCID, Yee Jennifer C.ORCID, Zang WeichengORCID, Shvartzvald YossiORCID, Han CheonghoORCID, Gould Andrew, Albrow Michael D.ORCID, Chung Sun-JuORCID, Hwang Kyu-HaORCID, Jung Youn KilORCID, Shin In-GuORCID, Yang HongjingORCID, Cha Sang-Mok, Kim Dong-Jin, Kim Seung-LeeORCID, Lee Chung-UkORCID, Lee Dong-Joo, Lee Yongseok, Park Byeong-GonORCID, Pogge Richard W.ORCID, Wang Hanyue, Mróz Przemek, Szymański Michał K.ORCID, Skowron JanORCID, Poleski Radek, Soszyński IgorORCID, Pietrukowicz PawełORCID, Kozłowski SzymonORCID, Ulaczyk KrzysztofORCID, Rybicki Krzysztof A., Iwanek PatrykORCID, Wrona MarcinORCID, Beichman CharlesORCID, Bryden GeoffryORCID, Carey SeanORCID, Henderson Calen B.ORCID, Calchi Novati SebastianoORCID, Zhu WeiORCID, Jacklin SavannahORCID, Penny Matthew T.ORCID, , , , ,
Abstract
Abstract
We complete the analysis of planetary candidates found by the KMT AnomalyFinder for the 2017 prime fields that cover ∼13 deg2. We report three unambiguous planets: OGLE-2017-BLG-0640, OGLE-2017-BLG-1275, and OGLE-2017-BLG-1237. The first two of these were not previously identified, while the last was not previously published due to technical complications induced by a nearby variable. We further report that a fourth anomalous event, the previously recognized OGLE-2017-BLG-1777, is very likely to be planetary, although its light curve requires unusually complex modeling because the lens and source both have orbiting companions. One of the three unambiguous planets, OGLE-2017-BLG-1275, is the first AnomalyFinder discovery that has a Spitzer microlens parallax measurement, π
E ≃ 0.045 ± 0.015, implying that this planetary system almost certainly lies in the Galactic bulge. In the order listed, the four planetary events have planet-host mass ratios q and normalized projected separations s of
(
log
q
,
s
)
=
(
−
2.31
,
0.61
)
, (−2.06, 0.63/1.09), (−2.10, 1.04), and (−2.86, 0.72). Combined with previously published events, the 2017 prime fields contain 11 unambiguous planets with well-measured q and one very likely candidate, of which three are AnomalyFinder discoveries. In addition to these 12, there are three other unambiguous planets with large uncertainties in q.
Publisher
American Astronomical Society
Subject
Space and Planetary Science,Astronomy and Astrophysics
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